diff --git a/components/freertos/include/freertos/portable.h b/components/freertos/include/freertos/portable.h
index 33b740e89..ce189f31c 100644
--- a/components/freertos/include/freertos/portable.h
+++ b/components/freertos/include/freertos/portable.h
@@ -205,7 +205,7 @@ BaseType_t xPortInterruptedFromISRContext();
 /* Multi-core: get current core ID */
 static inline uint32_t IRAM_ATTR xPortGetCoreID() {
     int id;
-    __asm__ (
+    __asm__ __volatile__ (
         "rsr.prid %0\n"
         " extui %0,%0,13,1"
         :"=r"(id));